1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
|
/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#ifndef IMAGE_CODECS_SVQ1_H
#define IMAGE_CODECS_SVQ1_H
#include "common/bitstream.h"
#include "image/codecs/codec.h"
namespace Common {
template <class BITSTREAM>
class Huffman;
struct Point;
}
namespace Image {
/**
* Sorenson Vector Quantizer 1 decoder.
*
* Used by PICT/QuickTime.
*/
class SVQ1Decoder : public Codec {
public:
SVQ1Decoder(uint16 width, uint16 height);
~SVQ1Decoder();
const Graphics::Surface *decodeFrame(Common::SeekableReadStream &stream);
Graphics::PixelFormat getPixelFormat() const { return _surface->format; }
private:
Graphics::Surface *_surface;
uint16 _width, _height;
uint16 _frameWidth, _frameHeight;
byte *_last[3];
typedef Common::Huffman<Common::BitStream32BEMSB> HuffmanDecoder;
HuffmanDecoder *_blockType;
HuffmanDecoder *_intraMultistage[6];
HuffmanDecoder *_interMultistage[6];
HuffmanDecoder *_intraMean;
HuffmanDecoder *_interMean;
HuffmanDecoder *_motionComponent;
bool svq1DecodeBlockIntra(Common::BitStream32BEMSB *s, byte *pixels, int pitch);
bool svq1DecodeBlockNonIntra(Common::BitStream32BEMSB *s, byte *pixels, int pitch);
bool svq1DecodeMotionVector(Common::BitStream32BEMSB *s, Common::Point *mv, Common::Point **pmv);
void svq1SkipBlock(byte *current, byte *previous, int pitch, int x, int y);
bool svq1MotionInterBlock(Common::BitStream32BEMSB *ss, byte *current, byte *previous, int pitch,
Common::Point *motion, int x, int y);
bool svq1MotionInter4vBlock(Common::BitStream32BEMSB *ss, byte *current, byte *previous, int pitch,
Common::Point *motion, int x, int y);
bool svq1DecodeDeltaBlock(Common::BitStream32BEMSB *ss, byte *current, byte *previous, int pitch,
Common::Point *motion, int x, int y);
void putPixels8C(byte *block, const byte *pixels, int lineSize, int h);
void putPixels8L2(byte *dst, const byte *src1, const byte *src2, int dstStride, int srcStride1, int srcStride2, int h);
void putPixels8X2C(byte *block, const byte *pixels, int lineSize, int h);
void putPixels8Y2C(byte *block, const byte *pixels, int lineSize, int h);
void putPixels8XY2C(byte *block, const byte *pixels, int lineSize, int h);
void putPixels16C(byte *block, const byte *pixels, int lineSize, int h);
void putPixels16X2C(byte *block, const byte *pixels, int lineSize, int h);
void putPixels16Y2C(byte *block, const byte *pixels, int lineSize, int h);
void putPixels16XY2C(byte *block, const byte *pixels, int lineSize, int h);
};
} // End of namespace Image
#endif
|
